Dentistry – Orthodontics – Means to transmit or apply force to tooth
Patent
1992-12-01
1994-04-05
Mancene, Gene
Dentistry
Orthodontics
Means to transmit or apply force to tooth
433 21, A61C 300
Patent
active
052999351
ABSTRACT:
An orthodontic appliance (10) for distalizing an upper molar (12) includes a main support shaft (50) disposed in the archwire receptacle (22) of a molar tooth bracket (20). A slide shaft (52) extends from the main support shaft (50) and movably supports a slide collar (56). The slide collar (56) is tied via a tensile ligature (66) to the bracket (34) of a secondary tooth (14), such as a premolar. A biocompatible and corrosion resistant compression spring (64) is operatively disposed between the slide collar (56) and the slide shaft (52). The compression spring (64) is prevented from buckling by a guide pin (60) extending centrally through the compression spring (64). The guide pin (60) is attached at one end to the slide collar (56) and the other end passes through a guide tube (58) extending rigidly from the slide shaft (52). A mesial support ligature (68) extends between the slide collar ( 56) and an archwire (38) to prevent inadvertent dislocation of the appliance (10).
REFERENCES:
patent: 3525153 (1970-08-01), Gerber
patent: 3936938 (1976-02-01), Northcutt
patent: 4424030 (1984-01-01), Smiley et al.
patent: 4424031 (1984-01-01), Dahan
patent: 4483674 (1984-11-01), Schutz
patent: 4595361 (1986-06-01), Blechman et al.
patent: 5022855 (1991-06-01), Jeckel
patent: 5064370 (1991-11-01), Jones
patent: 5087196 (1992-02-01), Polanco
Lucchesi Nicholas D.
Mancene Gene
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